Assertion (A) Carbonate and hydroxide ores are concentrated by froth floatation process. Reason (R) In froth floatation process, mineral oil is used due to it preferentially wets the gangue particles.

• A. If both Assertion and Reason are true and Reason is correct explanation of Assertion
• B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
• C. If Assertion is true but Reason is false.
• D. If both Assertion and Reason and false.